<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8"/>
    <title>列表过滤</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
<!-- 准备好一个容器-->
<div id="root">
    <h2>人员列表</h2>
    <input type="text" placeholder="请输入名字" v-model="keyWord">
    <ul>
        <li v-for="(p,index) of filPerons" :key="index">
            {{p.name}}-{{p.age}}-{{p.sex}}
        </li>
    </ul>
</div>

<script type="text/javascript">
    Vue.config.productionTip = false

    //用watch实现
    //#region
    /* new Vue({
        el:'#root',
        data:{
            keyWord:'',
            persons:[
                {id:'001',name:'马冬梅',age:19,sex:'女'},
                {id:'002',name:'周冬雨',age:20,sex:'女'},
                {id:'003',name:'周杰伦',age:21,sex:'男'},
                {id:'004',name:'温兆伦',age:22,sex:'男'}
            ],
            filPerons:[]
        },
        watch:{
            keyWord:{
                immediate:true,
                handler(val){
                    this.filPerons = this.persons.filter((p)=>{
                        return p.name.indexOf(val) !== -1
                    })
                }
            }
        }
    }) */
    //#endregion

    //用computed实现
    new Vue({
        el: '#root',
        data: {
            keyWord: '',
            persons: [
                {id: '001', name: '马冬梅', age: 19, sex: '女'},
                {id: '002', name: '周冬雨', age: 20, sex: '女'},
                {id: '003', name: '周杰伦', age: 21, sex: '男'},
                {id: '004', name: '温兆伦', age: 22, sex: '男'}
            ]
        },
        computed: {
            filPerons() {
                return this.persons.filter((p) => {
                    return p.name.indexOf(this.keyWord) !== -1
                })
            }
        }
    })
</script>
</body>
</html>